@article{moher2009-19622551,
  author  = {Moher, David and Liberati, Alessandro and Tetzlaff, Jennifer and Altman, Douglas G. and {PRISMA Group}},
  title   = {{Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement}},
  journal = {BMJ},
  year    = {2009},
  doi     = {10.1136/bmj.b2535},
  pmid    = {19622551},
  url     = {https://doi.org/10.1136/bmj.b2535}
}